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Finding the Fourth Proportional to 87,862.40, 131,728.80 and 37,901.60

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Solution

The fourth proportional to 87,862.40, 131,728.80 and 37,901.60 is: 56,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,862.40 : 131,728.80 = 37,901.60 : x
  2. Step 2: Convert to fraction form
    87,862.40/131,728.80 = 37,901.60/x
  3. Step 3: Cross multiply
    87,862.40x = 131,728.80 × 37,901.60
  4. Step 4: Simplify right side
    87,862.40x = 4,992,732,286.08
  5. Step 5: Solve for x
    x = 4,992,732,286.08/87,862.40
  6. Step 6: Final answer
    x = 56,824.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.